There is a feature request to surface this information in a more accessible way, which I believe the iNat team are hoping to develop: https://forum.inaturalist.org/t/add-interactions-to-species-pages/433
There is a test version that you can see by adding test=interactions to any species page, for example: https://www.inaturalist.org/taxa/56133-Quercus-robur?test=interactions
The thread linked to has some suggestions for how best to record these interactions using observation fields (e.g. the “Interaction->” fields) and you can add a link to a related observation by using the “Associated observation” field.